Did your computer fail to open an ONETOC2 file? We explain what they are used for and recommend software that we know can open or otherwise handle your .ONETOC2 files.
What is an ONETOC2 file?
An .ONETOC2 file is an OneNote table of contents file. Through our analysis of ONETOC2 files, we know that one use of the format is OneNote table of contents. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.
We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!
Suggest another file format using extension ONETOC2
While we know of one file format using the .ONETOC2 file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .ONETOC2 file.
Various ONETOC2 file openers, viewers, etc.
These apps are known to open certain types of ONETOC2 files. Remember, different programs may use ONETOC2 files for different purposes, so you may need to try out a few of them to be able to open your specific file.